Alternatives to onsemi MC3479PG
onsemi MC3479PG and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 MC3479PGonsemi |  L293DSTMicroelectronics | 2128 (A4988 Breakout)Pololu | +1more | |
|---|---|---|---|---|
| FFF Compatibility | Completely different pinout assignment; requires redesigning board traces or using jumper wires.Housed in the same physical 16-DIP package size (0.300-inch width).Functions as a dual H-bridge driver but lacks the internal translation/indexer logic of the MC3479, requiring an external microcontroller to handle phase sequencing. | Pin function layout does not match the MC3479; requires trace routing changes or a wired adapter board.Matches standard 16-pin dual-row spacing, but is a populated module board (carrier breakout) with slightly taller components rather than a monolithic IC.Performs bipolar stepper motor driving with an integrated indexer, fully covering and exceeding the functional requirements of the MC3479. | ||
 AI Summary | MC3479PG by onsemi: Bipolar Motor Driver CMOS Parallel 16-PDIP. | The L293D is a highly popular, active dual H-bridge driver that serves as a solid physical-footprint replacement. It supports higher current (600mA vs 350mA) and broader supply voltage (up to 36V) than the MC3479, but lacks the internal indexer logic, necessitating external logic control (e.g. from an MCU) to sequence the phases.
| The Pololu 2128 is an active, modular carrier board using the Allegro A4988 stepper driver. It mounts directly into a 16-pin footprint (0.1" pitch) and provides full step/direction indexer functionality like the MC3479, while massively upgrading current capability (1.2A) and microstepping capabilities.
| |
| Lifecycle Status | Obsolete | Active | Unknown | |
| Market Availability | Discontinued | In stock | Unknown | |
| REACH | REACH | REACH | Unknown | |
| RoHS | RoHS | RoHS | Unknown | |
| Description | Bipolar Motor Driver CMOS Parallel 16-PDIP | IC, DRIVER + DIODE QUAD, DIP16, 293 | The Pololu 2128 is an active, modular carrier board using the Allegro A4988 stepper driver. It mounts directly into a 16-pin footprint (0.1" | |
| Manufacturer | onsemi | STMicroelectronics | Pololu | |
| Type | Power Management (PMIC) | Motor / Motion / Ignition Controllers & Drivers | Component | |
| Datasheet | Open | Open | N/A | |
| Lead Time | 26 weeks | 52 weeks | Unknown | |
| Country of Origin | - | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8542.39.0060 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Function | Driver - Fully Integrated, Control and Power Stage | - | - | |
| Interface | Parallel | - | - | |
| Technology | CMOS | - | - | |
| Applications | General Purpose | - | - | |
| Mounting Type | Through Hole | - | - | |
| Package / Case | 16-DIP (0.300", 7.62mm) | - | - | |
| Voltage - Load | 7.2V ~ 16.5V | - | - | |
| Step Resolution | 1, 1/2 | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 MC3479Ponsemi | Discontinued | Obsolete | 3Alternatives availableSee Alternatives |
 MC34072DGonsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi MC3479PG is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.
The closest qualified second sources for the onsemi MC3479PG are the L293D (STMicroelectronics) and the 2128 (A4988 Breakout) (Pololu), out of 3 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the MC3479PG are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The MC3479PG (onsemi) is a part in the Power Management (PMIC) category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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